Grillo G55 Uso Y Mantenimiento página 13

The snow thrower is 60 cm wide and can clear snow up to 30 cm deep. Wheel weights should be used for best
performance.
The two side skids must be adjusted so that they just skim level ground (asphalted streets) or keep the snow thrower
high if the ground is uneven (fig. 15).
Maintenance: when work is over, remove any snow left in the snow thrower so it cannot freeze and block the
turbine. Check the oil level in the central box housing the bevel gear pair often and if necessary top up with MP SAE
80W/90 (high pressure) gearbox oil.
PLOUGHS
The ploughs designed for this rotovator have been especially developed to obtain good ploughing without over-
straining the operator.
The models available are a single-share plough and a 180° roll-over plough. The latter is especially suitable when
working backwards and forwards, such as along rows of vines or fruit-trees.
The depth of the furrow obtained may vary from 10 to 15 cm depending on the terrain.
The use of steel wheels is recommended (fig. 16).
TOWED TRAILER
The trailer designed for the rotovator is very useful for short hauls around the farm. It is easy to handle, compact
and very quickly hitched to the rotovator. The trailer can be attached directly to the machine by hitching it to the
special towing bar (fig. 17) leaving the tiller in place.
WHEEL-WEIGHTS
These are mounted on the wheel rims and fixed with two of the four nuts which fix the wheels themselves. They
increase the weight of the machine and thus its grip, and their use is recommended when working with the plough,
the adjustable furrower, and even the rotary tiller and the trailer if special performances are required. They weigh
10 Kg. each (fig. 18).
TOWING BAR
The towing bar is needed to attach the riding sulky or the trailer to the machine without removing the rotary tiller.
This attachment must be fastened to the towing hook on the rotovator (fig. 19).
ROTARY TILLER SUPPORT WHEEL
It is very useful while travelling between jobs, because it keeps the rotary tiller off the ground, making transfer easier
and less tiring (fig. 20).
GRASS SHREDDERS
With rotary blade having width 50 cm (fig. 21), it is able to cut tall grass and tough stalks.
WHEEL EXTENSIONS
These help to widen the machine's track and increase its stability on crosswise slopes. They must be fixed between
the wheels and the hubs. The track is widened by 6 cm on each side (fig. 22).
WIDE STEEL WHEELS
These wheels are particularly advisable when working on very hard soils with the rotary tiller.
The cross bars placed around the wheels dig into the ground, giving the machine a firm grip and preventing the
wheels from skidding (fig. 23). The wide steel wheels can be also used when tyres or the narrow steel wheels might
skid or sink in damp or recently tilled ground. The use of wide steel wheels is recommended, although only in these
cases. Otherwise tyres are generally advisable; if special grip is not required, they give the machine more even
traction and form an elastic buffer between the machine and the ground.
Twin rings are also available for fitting to these wheels.
TRAILER
The trailer is mounted on the tool flanging. It is equipped with a dumper and reversible wheels to make steering
easier (figure 24).
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